I have not found in launchpad a reference to this possible bug.
The pad copper crown of a THT footprint is not shown in the footprint editor. It is shown correctly in pcbnew. Can anyone confirm if it is my configuration or a bug?
footprint editor
pcbnew
Versions: 5.1.4 stable ubuntu and 5.1 nightly ubuntu.
I suspect you have outline mode enabled (left toolbar)
It shows the pad features with a thin line while in that mode. The line representing the drill is drawn in the non configurable color of drills (which is equal to the background color)